I've been doing everything to heal proximal hamstring tendinopathy after a hamstring tear for the past 8 months but it's still painful. doc doesn't help. will i have to permanently live with the hamstring pain and never get back to previous athletism?

Hamstring injuries are very difficult to resolve. It doesn’t help that you probably are still experiencing a growth period. I would get another opinion from another doctor, and seek the help of a physical therapist to provide a structured program of stretching and strengthening. This will not be easy and will take time, but it can be accomplished.